White Space core.php

removed white space on line 1 in front of <?PHP to prevent "...headers already sent by" issues

webinterface/core.php

@@ -1,4 +1,4 @@
-<?PHP
+<?PHP
 ini_set('session.cookie_httponly', 1);
 ini_set('session.use_strict_mode', 1);
 if(in_array('sha512', hash_algos())) {
@@ -509,4 +509,4 @@ $('form[data-toggle="validator"]').validator({
 });
 </script>
 </body>
-</html>
+</html>